mirror of https://github.com/go-gitea/gitea
Make SSL cipher suite configurable (#17440)
zeripath
3 years ago
committed by
GitHub
parent
9f14fe43c6
commit
c96be0cd98
@ -0,0 +1,191 @@ |
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// Copyright 2021 The Gitea Authors. All rights reserved.
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// Use of this source code is governed by a MIT-style
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// license that can be found in the LICENSE file.
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package cmd |
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import ( |
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"crypto/tls" |
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"net/http" |
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"os" |
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"strings" |
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"code.gitea.io/gitea/modules/graceful" |
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"code.gitea.io/gitea/modules/log" |
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"code.gitea.io/gitea/modules/setting" |
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"github.com/klauspost/cpuid/v2" |
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) |
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var tlsVersionStringMap = map[string]uint16{ |
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"": tls.VersionTLS12, // Default to tls.VersionTLS12
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"tlsv1.0": tls.VersionTLS10, |
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"tlsv1.1": tls.VersionTLS11, |
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"tlsv1.2": tls.VersionTLS12, |
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"tlsv1.3": tls.VersionTLS13, |
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} |
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func toTLSVersion(version string) uint16 { |
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tlsVersion, ok := tlsVersionStringMap[strings.TrimSpace(strings.ToLower(version))] |
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if !ok { |
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log.Warn("Unknown tls version: %s", version) |
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return 0 |
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} |
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return tlsVersion |
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} |
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var curveStringMap = map[string]tls.CurveID{ |
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"x25519": tls.X25519, |
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"p256": tls.CurveP256, |
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"p384": tls.CurveP384, |
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"p521": tls.CurveP521, |
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} |
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func toCurvePreferences(preferences []string) []tls.CurveID { |
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ids := make([]tls.CurveID, 0, len(preferences)) |
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for _, pref := range preferences { |
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id, ok := curveStringMap[strings.TrimSpace(strings.ToLower(pref))] |
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if !ok { |
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log.Warn("Unknown curve: %s", pref) |
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} |
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if id != 0 { |
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ids = append(ids, id) |
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} |
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} |
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return ids |
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} |
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var cipherStringMap = map[string]uint16{ |
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"rsa_with_rc4_128_sha": tls.TLS_RSA_WITH_RC4_128_SHA, |
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"rsa_with_3des_ede_cbc_sha": tls.TLS_RSA_WITH_3DES_EDE_CBC_SHA, |
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"rsa_with_aes_128_cbc_sha": tls.TLS_RSA_WITH_AES_128_CBC_SHA, |
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"rsa_with_aes_256_cbc_sha": tls.TLS_RSA_WITH_AES_256_CBC_SHA, |
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"rsa_with_aes_128_cbc_sha256": tls.TLS_RSA_WITH_AES_128_CBC_SHA256, |
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"rsa_with_aes_128_gcm_sha256": tls.TLS_RSA_WITH_AES_128_GCM_SHA256, |
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"rsa_with_aes_256_gcm_sha384": tls.TLS_RSA_WITH_AES_256_GCM_SHA384, |
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"ecdhe_ecdsa_with_rc4_128_sha": tls.TLS_ECDHE_ECDSA_WITH_RC4_128_SHA, |
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"ecdhe_ecdsa_with_aes_128_cbc_sha": tls.TLS_ECDHE_ECDSA_WITH_AES_128_CBC_SHA, |
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"ecdhe_ecdsa_with_aes_256_cbc_sha": tls.TLS_ECDHE_ECDSA_WITH_AES_256_CBC_SHA, |
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"ecdhe_rsa_with_rc4_128_sha": tls.TLS_ECDHE_RSA_WITH_RC4_128_SHA, |
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"ecdhe_rsa_with_3des_ede_cbc_sha": tls.TLS_ECDHE_RSA_WITH_3DES_EDE_CBC_SHA, |
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"ecdhe_rsa_with_aes_128_cbc_sha": tls.TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA, |
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"ecdhe_rsa_with_aes_256_cbc_sha": tls.TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA, |
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"ecdhe_ecdsa_with_aes_128_cbc_sha256": tls.TLS_ECDHE_ECDSA_WITH_AES_128_CBC_SHA256, |
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"ecdhe_rsa_with_aes_128_cbc_sha256": tls.TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA256, |
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"ecdhe_rsa_with_aes_128_gcm_sha256": tls.TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256, |
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"ecdhe_ecdsa_with_aes_128_gcm_sha256": tls.TLS_ECDHE_ECDSA_WITH_AES_128_GCM_SHA256, |
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"ecdhe_rsa_with_aes_256_gcm_sha384": tls.TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384, |
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"ecdhe_ecdsa_with_aes_256_gcm_sha384": tls.TLS_ECDHE_ECDSA_WITH_AES_256_GCM_SHA384, |
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"ecdhe_rsa_with_chacha20_poly1305_sha256": tls.TLS_ECDHE_RSA_WITH_CHACHA20_POLY1305_SHA256, |
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"ecdhe_ecdsa_with_chacha20_poly1305_sha256": tls.TLS_ECDHE_ECDSA_WITH_CHACHA20_POLY1305_SHA256, |
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"ecdhe_rsa_with_chacha20_poly1305": tls.TLS_ECDHE_RSA_WITH_CHACHA20_POLY1305, |
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"ecdhe_ecdsa_with_chacha20_poly1305": tls.TLS_ECDHE_ECDSA_WITH_CHACHA20_POLY1305, |
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"aes_128_gcm_sha256": tls.TLS_AES_128_GCM_SHA256, |
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"aes_256_gcm_sha384": tls.TLS_AES_256_GCM_SHA384, |
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"chacha20_poly1305_sha256": tls.TLS_CHACHA20_POLY1305_SHA256, |
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} |
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func toTLSCiphers(cipherStrings []string) []uint16 { |
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ciphers := make([]uint16, 0, len(cipherStrings)) |
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for _, cipherString := range cipherStrings { |
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cipher, ok := cipherStringMap[strings.TrimSpace(strings.ToLower(cipherString))] |
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if !ok { |
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log.Warn("Unknown cipher: %s", cipherString) |
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} |
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if cipher != 0 { |
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ciphers = append(ciphers, cipher) |
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} |
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} |
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return ciphers |
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} |
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// defaultCiphers uses hardware support to check if AES is specifically
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// supported by the CPU.
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//
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// If AES is supported AES ciphers will be preferred over ChaCha based ciphers
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// (This code is directly inspired by the certmagic code.)
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func defaultCiphers() []uint16 { |
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if cpuid.CPU.Supports(cpuid.AESNI) { |
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return defaultCiphersAESfirst |
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} |
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return defaultCiphersChaChaFirst |
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} |
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var ( |
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defaultCiphersAES = []uint16{ |
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tls.TLS_ECDHE_ECDSA_WITH_AES_256_GCM_SHA384, |
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tls.TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384, |
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tls.TLS_ECDHE_ECDSA_WITH_AES_128_GCM_SHA256, |
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tls.TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256, |
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} |
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defaultCiphersChaCha = []uint16{ |
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tls.TLS_ECDHE_ECDSA_WITH_CHACHA20_POLY1305, |
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tls.TLS_ECDHE_RSA_WITH_CHACHA20_POLY1305, |
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} |
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defaultCiphersAESfirst = append(defaultCiphersAES, defaultCiphersChaCha...) |
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defaultCiphersChaChaFirst = append(defaultCiphersChaCha, defaultCiphersAES...) |
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) |
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// runHTTPs listens on the provided network address and then calls
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// Serve to handle requests on incoming TLS connections.
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//
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// Filenames containing a certificate and matching private key for the server must
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// be provided. If the certificate is signed by a certificate authority, the
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// certFile should be the concatenation of the server's certificate followed by the
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// CA's certificate.
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func runHTTPS(network, listenAddr, name, certFile, keyFile string, m http.Handler) error { |
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tlsConfig := &tls.Config{} |
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if tlsConfig.NextProtos == nil { |
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tlsConfig.NextProtos = []string{"h2", "http/1.1"} |
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} |
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if version := toTLSVersion(setting.SSLMinimumVersion); version != 0 { |
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tlsConfig.MinVersion = version |
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} |
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if version := toTLSVersion(setting.SSLMaximumVersion); version != 0 { |
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tlsConfig.MaxVersion = version |
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} |
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// Set curve preferences
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tlsConfig.CurvePreferences = []tls.CurveID{ |
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tls.X25519, |
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tls.CurveP256, |
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} |
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if curves := toCurvePreferences(setting.SSLCurvePreferences); len(curves) > 0 { |
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tlsConfig.CurvePreferences = curves |
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} |
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// Set cipher suites
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tlsConfig.CipherSuites = defaultCiphers() |
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if ciphers := toTLSCiphers(setting.SSLCipherSuites); len(ciphers) > 0 { |
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tlsConfig.CipherSuites = ciphers |
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} |
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tlsConfig.Certificates = make([]tls.Certificate, 1) |
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certPEMBlock, err := os.ReadFile(certFile) |
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if err != nil { |
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log.Error("Failed to load https cert file %s for %s:%s: %v", certFile, network, listenAddr, err) |
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return err |
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} |
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keyPEMBlock, err := os.ReadFile(keyFile) |
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if err != nil { |
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log.Error("Failed to load https key file %s for %s:%s: %v", keyFile, network, listenAddr, err) |
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return err |
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} |
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tlsConfig.Certificates[0], err = tls.X509KeyPair(certPEMBlock, keyPEMBlock) |
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if err != nil { |
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log.Error("Failed to create certificate from cert file %s and key file %s for %s:%s: %v", certFile, keyFile, network, listenAddr, err) |
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return err |
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} |
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return graceful.HTTPListenAndServeTLSConfig(network, listenAddr, name, tlsConfig, m) |
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} |
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func runHTTPSWithTLSConfig(network, listenAddr, name string, tlsConfig *tls.Config, m http.Handler) error { |
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return graceful.HTTPListenAndServeTLSConfig(network, listenAddr, name, tlsConfig, m) |
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} |
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